I was given a 1994 GMC Sierra Pickup, it will crank but not start, the fuel will

shawnh199

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not flow Please help? I changed the fuel filter and cleaned out the intake but it will only start if I pour some gas into the throttle body. Any help would be appreciated.
 
It could be fuel pump not running

fuel pump relay or fuel pump bad, could keep pump from running.

When you turn on your key to "start" position, your fuel pump should run, for two seconds, and then shut off, until the engine starts. Once the engine shows running, the pump will restart, and keep gas coming in. The oil pressure switch will then allow it to keep running also, as long as the oil pressure is up...if the oil pressure drops, the relay kicks out and the pump shuts down.

So, it could be a relay, pump, or maybe even a oil pressure switch that is stuck.

If you can remove the line to the throttle body, and add a hose to it, and put it into a can, then see if gas comes out when starting. It could be injecters not opening for some reason.
 
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